Stone-dressing machine.



R. E. SHAW. STONE-DRESSING MACHINE. APPLICATION men SEPT. I. 1-915 1,166 86() Patented Jan. 4, 1916.

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R. E. SHAW. STONE nmsssms MACHINE. 7 APPLICATION FILED SEPT-11, I915. 1,166,860 Patented Jan. 4, 1916.

2 SHEEIS-SHE ET 2 RAYMOND E. SHAW, 0F BOSTON, MASSACHUSETTS, ASSIQ-NOR TO B. F. STUBTEVANT COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

STONE-DRESSING MACHINE.

Specification of Letters Patent.

. Patented J an. 4, 1916.

Application filed September 11, 1915. Serial No. 50,146. v

To all whom it may concern:

Be it known that I, RAYMOND E. SHAW, a citizen of the United States, residing at Boston, in the county of Suifolk and State of Massachusetts, have invented certain new and useful Improvements in Stone-Dressing Machines; and I do hereby declare the fol lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apper-.

tains to make and use the same.

The present invention relates to stone dressing or surfacing machines in which a power-driven tool is moved by the operator by hand over the work.

In the process of dressing or surfacing stone, such, for example as granite, a considerable quantity of fine chips-or dust is produced which is dangerous to the health of the operator, interferes with his vision, and

reduces the speed of the cutting.

One of the objects of the present invention is to provide a stone surfacing. machine of the above type in which the chips and dust are quickly and'eifectively removed, and which shall be of simple and compact construction and easy and convenient to operate.

With these objects in view, the present invention comprises a stone surfacing machine of the above type in which the structural elements are designed as a part of a dust exhaust system and permit the substantially universal adjustment of the tool and a dust collector relatively to the work.

In-the accom anying drawings Figure '1 is a side elevation of what is now considered to be the preferred form of the inven-. tion, in which an exhaust tube is arranged horizontally and supports, at one end, the operatin tool and the suction mouthiece of the ex aust system. Fig. 2 is a side e evation of a modified form of the invention, in which the exhaust tube is arranged vertically and supports thehorizontal arm upon which the operating tool and. the suction. mouth-piece are slidably mounted.

In the preferred form of the invention, as in the type of machines illustrated in Fig. 1, a wheeled truck 2 is employed to facilitate movement of themachine from one piece of ',work to another. Upon the truck is mount- """'ed the-standard '3' on which is supported a flat ring or circular frame 4. The frame has bearing sleeves 5- -5 rotatably and slidably fitting the standard 3, so that the frame is free to turn and to slide vertically theretached to a drum adapted to be rotated by the handle 10, to raise or lower the frame 4 as may be desired.

Slidably mounted on the frame 4 is the tubularvarm 11, pivoted rollers 12 on the I frame engaging the member 11 and permitting the latter to be easily adjustedback and forth. At one end of the slidable arm 11 is supported a suitable pneumatic or other power driven tool 13 with a cutter 14 at its lower end. The tool is supplied with compressed air by a flexible hose 15 connected to a suitable source. The exhaust from the tool is directed toward the cutter 14 by a hose or pipe 16 to blow away the chips and dust. On the opposite side of the cutter is located the suction mouth-piece or hood 17 in close proximity to the cutter and-suitably the work, the cuttings being drawn directly into the tool carrying arm 11 which forms a part of the exhaust system.

In Fig. 2 which shows the present invention in a modified form, the wheeled truck a 20 supports a hollow column 21'. Rotatably mounted on the column is the vertical guide along which is vertically adjustable a horizontal beam or arm 23. The beam 23 is adjusted vertically by means of drum 24 journaled thereon and actuated by a'hand wheel.

25 to wind or unwind a rope 26 over suit-' ably disposed guide pulleys 27 and 28. One end of the rope is attached to the drum and the other end to the outer end of the arm23.

Adjustable along the arm 23 is a carriage 28 in the form of a V-shaped frame with rollers 29 at the upper ends traveling on the top ofthe arm 23. Suitably secured to and I projecting downwardly from the carriage 28' is a pneumatic or other tool 30 having a cutter 31. The tool issupplied with com pressed air from a suitable source and the exhaust therefrom is directed toward the cutter by a pipe 32.

' The dust exhausting system of the type ofmachine in Fig. 2 includes a suction mouth-piece or hood 33 attached either to the carriage 28 or to the tool 30 or both according'to the convenience of the structure. In this type of machine the vertical column 21 is made tubular and serves not only as the support for the tool mechanism but also forms a part of the exhaust system. To that end the suction hood 33 is connected to the column 21 by means of a flexible hose 34 and swiveled, curved suction pipe 35.

I The flexible hose is connected at its lower and maintain, and

end to the suction hood 33 and at its upper end to the suction pipe 35 by means of the universal joints 36 and 37 respectively. The

pipe 37 is joined by a ball-bearing swivel joint 38 to the head of the column 21.

A further feature of the invention which is conducive of the practicability, compactness and'unit-structure of the combined cutting and exhausting system, comprehends connecting to the tubular exhaust members an exhaust mechanism preferably disposed on the truck. In the type of machine shown in Fig. 2 this is done by leading from-the bottom of the column21 a section 3-9 to which is connected the intake side of a suitable fan or exhauster 40 with a discharge 41. The fan is driven by a direct connected motor 42.

In operation the cutter 31 is shifted into cutting. position on the work and the cuttings are drawn quickly into the hood 33 and thenceconveyed through the flexiblehose 35, the pipe 37 and column 21 to the The flexible hose and the suction fan 40.;

swiveled pipe 37 the movements 0 riage 28 thereon, as the tool is moved variously over the work. The suction hood 23 eld and swing to follow and tool move together and the suction of air through the tubes of the system operates to efiectually remove the dnst.

From the foregoing it will be seen that provides a simple and the present invention compact structure whlch is easy to handle which is not liable to derangement or damage in use. This is an important advantagein this type of stone cutting machinery which is designed to be carried or shifted-to difiierent positionsin a stone yard, quarry or on stone structures.

the scope of the invention the arm 23 and the 'carsite the suction mouth-piece, substantl combination of parts, except as specified in the claims, and that they may be variously modified within the skill of the artisan as may be required for adaptation to desired forms of apparatus without departing from and within the limitation of the claims.

Having thus described the invention what is claimed is:

1. A stone dressing machine, having, in combination, an operating tool, means for supporting the tool including a tubular member and adapted for connection to suction means, a suction mouth-piece arranged in proximity to the tool and connected with said tubular member, the latter forming a flue for conveying away the dust drawn into the mouth-p ece, substantially as described.

2. A stone dressing machine, having, in combination, a stone dressing tool, a support for said tool including a vertical col- .umn and an arm extending therefrom, one

cally adjustable thereon, a hollow horizontal member mounted on' jthe frame and adjust- .able transversely of the column, an operating tool mounted on the horizontal member,

the hollow horizontal member, said member forming a flue for. carrying away the dust produced by the tool, substantially as described. v v

4. A stone dressing machine, having, in combination, a vertical column, a hollow horizontal member movably mounted on the column and adapted to be connected to a suction device, a pneumatically operated tool mounted on said member, a suction mouth-piece arranged adjacent the tool and connected with the horizontal member, and an exhaust pipe for thetoolhaving its exhaust opening adjacent the tooland opoas described. t

. R Y ND member, substantially as and a suction mouth-piece arranged adjacent the tool and carried by and connected with Correctienin Letters PaiefliN0. 1.: 66.660.

- It is hereby certified thatin Letters Patent No. 1,166,860, granted January 4, 1916, upon the appiic'atioh of Raymond E. Shaw, of Boston; Massachusetts; for an improvement in Stone-'firessing Machines,- an error appears in the printed specifi cation requiring correction as follows: Page 2, line'7l, elaim 1, strike out the word. and; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice. r

Signed and sealeci this 1st day of February, A. D., 1916. 4

S 41 J. T.'NEWTON,

" Aeting ofPatenta. I I A 

